Hey all,
 
 My System:
 
  Cooler Master Centurion 5 Case
  BioStar7050-M2 (GeForce 7050PV / nForce 630a)
  AMD Athlon 64 X2 3800+  --  Windsor 65w  -- vCore rating of 1.20v - 1.25v <-- AMD specifications
  G.Skill F2-6400PHU1-1GBHz X 2
 
  I am getting very good cooling with this case with Stock CPU Cooler. I am running a Bus Speed of 280, CPU=2,800 MHz, HT Link 1,120 MHz, and Mem at DDR=466 MHz/DDR2=933 MHz, Timings 4-4-4-12-23 2T. Everything went well with these settings during Stress Testing. Ran MemTest 86 24+ hours and Prime95 for 2 days using a separate instance for each Core. Under Full Load/Stress vCore get very close to 60c. With System under very low Load and without CnQ/PowerNow enabled  vCore gets close to 40c. I will re-do the CPU HeatSink and do some Lapping in the near future, but doesn't seem nessasary at the Moment..
 
  About 2 Months ago, during POST, I received a warning that said something like "CPU Bus Speed is 280 Please enter BIOS and reset". I recall seeing this maybe 1 or 2 other times int the past 5 Month's. I just re-boot the sys and then everything runs fine.
 
 I am considering bumping up my vCore by one tick. My current Voltages reported on the PC Health screen in BIOS are:
       vCore = 1.31v (+.150 above Auto)
         DDR =  2.20v (BIOS setting 2.25v)
           NB =  1.28v (BIOS setting 1.32v)
 
           HT = 1.23v (BIOS has no setting for HT BUS, I suppose it is tied to the NB setting.??)
 
  I have searched around to find out from OCs what is a safe Max vCore for this CPU, but havn't found much on this 65w Windsor core. Most other 3800+ Windsor's under discussion are rated at a higher vCore and Wattage(1.30v-1.35v / 89w).
 
  Does this appear to be related to the vCore setting or would it be related to the NB voltage..???
 
  Any insight into this will be greatly appreciated. I was at first thinking that bumping vCore would be the way to go, but now have some doubts and think maybe it is the NB voltage I should Bump.
 
  What do you Techies think, Bump the vcore or the NB..???
 
 
Thanks,
             kenr77

lower your HT LINK to 4X then push your CPU more. You shouldnt need voltage above 1.4V core.
I believe NB voltage should be left alone unless you are pushing your CPU above 3GHZ

Hey tekzor,

 Thanks for the reply. My HT Link is at 4x(1120/280=4). I guess you mean to keep the vCore under 1.4v. Currently on the PC Health BIOS screen it shows vCore =  1.31v. Actual BIOS setting is +0.150v up from Startup, which I suppose is 1.20v.  The vCore increments are in steps of 0.0125v. My current vCore setting is +0.150 and sensors report a voltage of 1.31v.

 I have also considered lowering the vCore setting.  My current NB voltage is set to  1.32v, sensor reads 1.28v. The option available for NB voltages are: 1.24v, 1.27v,  1.32v, and 1.36v.

    Thanks,
                 kenr77    ----- sorry for my redundancy -----